Python MCQ - String - 2

This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “Strings – 2”.

1. What will be the output of the following Python code?

```
class father:
```
```
    def __init__(self, param):
```
```
        self.o1 = param
```
```
 
```
```
class child(father):
```
```
    def __init__(self, param):
```
```
        self.o2 = param
```
```
 
```
```
>>>obj = child(22)
```
```
>>>print "%d %d" % (obj.o1, obj.o2)
```

a) None None
b) None 22
c) 22 None
d) Error is generated
View Answer

Answer: d
Explanation: self.o1 was never created.

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2. What will be the output of the following Python code?

```
class tester:
```
```
    def __init__(self, id):
```
```
        self.id = str(id)
```
```
        id="224"
```
```
 
```
```
>>>temp = tester(12)
```
```
>>>print(temp.id)
```

a) 224
b) Error
c) 12
d) None
View Answer

Answer: c
Explanation: Id in this case will be the attribute of the class.

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3. What will be the output of the following Python code?

```
>>>example = "snow world"
```
```
>>>print("%s" % example[4:7])
```

a) wo
b) world
c) sn
d) rl
View Answer

Answer: a
Explanation: Execute in the shell and verify.

4. What will be the output of the following Python code?

```
>>>example = "snow world"
```
```
>>>example[3] = 's'
```
```
>>>print example
```

a) snow
b) snow world
c) Error
d) snos world
View Answer

Answer: c
Explanation: Strings cannot be modified.

5. What will be the output of the following Python code?

```
>>>max("what are you")
```

a) error
b) u
c) t
d) y
View Answer

Answer: d
Explanation: Max returns the character with the highest ascii value.

6. Given a string example=”hello” what is the output of example.count(‘l’)?
a) 2
b) 1
c) None
d) 0
View Answer

Answer: a
Explanation: l occurs twice in hello.

7. What will be the output of the following Python code?

```
>>>example = "helle"
```
```
>>>example.find("e")
```

a) Error
b) -1
c) 1
d) 0
View Answer

Answer: c
Explanation: Returns lowest index.

8. What will be the output of the following Python code?

```
>>>example = "helle"
```
```
>>>example.rfind("e")
```

a) -1
b) 4
c) 3
d) 1
View Answer

Answer: b
Explanation: Returns highest index.

9. What will be the output of the following Python code?

```
>>>example="helloworld"
```
```
>>>example[::-1].startswith("d")
```

a) dlrowolleh
b) True
c) -1
d) None
View Answer

Answer: b
Explanation: Starts with checks if the given string starts with the parameter that is passed.

10. To concatenate two strings to a third what statements are applicable?
a) s3 = s1 . s2
b) s3 = s1.add(s2)
c) s3 = s1.__add__(s2)
d) s3 = s1 * s2
View Answer

Answer: c
Explanation: __add__ is another method that can be used for concatenation.

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